add how to build the doc with devcontainer. (backport #4757)

.devcontainer/devcontainer.json

@@ -5,7 +5,7 @@
 	},
 	"workspaceMount": "source=${localWorkspaceFolder},target=/tmp/doc_repository,type=bind",
 	"workspaceFolder": "/tmp/doc_repository",
-	"postCreateCommand": "pip3 install --no-warn-script-location --user -r requirements.txt -c constraints.txt",
+	"postCreateCommand": "pip3 install --no-warn-script-location --user -r requirements.txt -c constraints.txt --break-system-packages",
 	"features": {
 		"ghcr.io/devcontainers/features/git:1": {}
 	},

README.md

@@ -18,13 +18,21 @@ To build this you need to install
 
 * make
 * graphviz
-* python virtualenv
 
-
-In the virtualenv 
+With [venv](https://docs.python.org/3/library/venv.html)
 
 ```
+# activate the venv
+python3 -m venv ros2doc
+
+# activate venv
+source ros2doc/bin/activate
+
+# install required packages
 pip install -r requirements.txt -c constraints.txt
+
+# deactivate the venv
+(ros2doc) deactivate
 ```
 
 ### Pinned versions
@@ -36,6 +44,7 @@ To upgrade the system validate that things are working and then use `pip freeze
 ## Building HTML
 
 ### Local development test
+
 For local testing of the current tree use:
 
 `make html`

docker/image/Dockerfile

@@ -3,14 +3,17 @@
 #
 # docker build -f docker/image/Dockerfile .
 
-FROM ubuntu:jammy
+FROM ubuntu:noble
 
 ARG user=rosindex
 ARG uid=1000
 
 ENV DEBIAN_FRONTEND noninteractive
 ENV SHELL /bin/bash
 
+# Delete user if it exists in container (e.g Ubuntu Noble: ubuntu)
+RUN if id -u $uid ; then userdel `id -un $uid` ; fi
+
 RUN apt-get update && \
     apt-get install --no-install-recommends -y \
         git-all \
@@ -31,4 +34,4 @@ WORKDIR /tmp/doc_repository
 
 USER $user
 
-CMD pip3 install --no-warn-script-location --user -r requirements.txt -c constraints.txt && make multiversion
+CMD pip3 install --no-warn-script-location --user -r requirements.txt -c constraints.txt --break-system-packages && make multiversion

source/The-ROS2-Project/Contributing/Contributing-To-ROS-2-Documentation.rst

@@ -33,29 +33,37 @@ The root directory contains configuration and files required to locally build th
 Building the site locally
 -------------------------
 
-Start by installing requirements located in the ``requirements.txt`` file:
+Start by creating `venv <https://docs.python.org/3/library/venv.html>`__ to build the documentation:
+
+.. code-block:: console
+
+   # activate the venv
+   python3 -m venv ros2doc
+
+   # activate venv
+   source ros2doc/bin/activate
+
+And install requirements located in the ``requirements.txt`` file:
 
 .. tabs::
 
   .. group-tab:: Linux
 
-    The next command does a user-specific install, which requires ``~/.local/bin/`` to be added to ``$PATH``:
-
     .. code-block:: console
 
-       pip3 install --user --upgrade -r requirements.txt
+       pip install -r requirements.txt -c constraints.txt
 
   .. group-tab:: macOS
 
     .. code-block:: console
 
-       pip3 install --user --upgrade -r requirements.txt
+       pip install -r requirements.txt -c constraints.txt
 
   .. group-tab:: Windows
 
     .. code-block:: console
 
-      python -m pip install --user --upgrade -r requirements.txt
+      python -m pip install -r requirements.txt -c constraints.txt
 
 In order for Sphinx to be able to generate diagrams, the ``dot`` command must be available.
 
@@ -232,6 +240,38 @@ Finally, to view the site, you can click on the "Go Live" button in the right bo
    :width: 100%
    :alt: Live Server
 
+Building the Site with Devcontainer
+-----------------------------------
+
+`ROS 2 Documentation GitHub repository <https://github.com/ros2/ros2_documentation>`__ also supports ``Devcontainer`` development environment with Visual Studio Code.
+This will enable you to build the documentation much easier without changing your operating system.
+
+See :doc:`../../How-To-Guides/Setup-ROS-2-with-VSCode-and-Docker-Container` to install VS Code and Docker before the following procedure.
+
+Clone repository and start VS Code:
+
+.. code-block:: console
+
+   git clone https://github.com/ros2/ros2_documentation
+   cd ./ros2_documentation
+   code .
+
+To use ``Devcontainer``, you need to install "Remote Development" Extension within VS Code search in Extensions (CTRL+SHIFT+X) for it.
+
+And then, use ``View->Command Palette...`` or ``Ctrl+Shift+P`` to open the command palette.
+Search for the command ``Dev Containers: Reopen in Container`` and execute it.
+This will build your development docker container for you automatically.
+
+To build the documentation, open a terminal using ``View->Terminal`` or ``Ctrl+Shift+``` and ``New Terminal`` in VS Code.
+Inside the terminal, you can build the documentation:
+
+.. code-block:: console
+
+   make html
+
+.. image:: images/vscode_devcontainer.png
+   :width: 100%
+   :alt: VS Code Devcontainer
 
 Writing pages
 -------------